The Harimau Watchlist
To search for IP, use the following: http://watchlist.security.org.my/index.php/watchlist/show/ip/the-ip-address
Example:
http://watchlist.security.org.my/index.php/watchlist/show/ip/192.168.0.100
OR http://watchlist.security.org.my/watchlist/show?ip=192.168.0.100
This will match the IP if it exists, or match the netblock if it falls within the netblock.
This list is updated daily.